A giant pyroelectric effect of a rigid rod-like polymer, poly[(s)-(-)-2-propionic acid methyl isocyanate]

Sugita, Atsushi; Yamashira, Yuhji; Tasaka, Shigeru
July 2005
Applied Physics Letters;7/11/2005, Vol. 87 Issue 2, p022904
Academic Journal
Electric activity of a rigid rod-like polymer, poly[(s)-(-)-2-propionic acid methyl isocyanate] (Pc*IC), in a solid state is reported. A measurement of a displacement-field hysteresis loop reveals that Pc*IC chain systems possessed polarization for which the direction can be inversed by an external field. Remanent polarization and a coercive field were determined to be 16.4 mC/m2 and 15.7 MV/m, respectively, at 20 °C. The polymer also exhibited the excellent pyroelectricity. A pyroelectric coefficient of about 300 μmC/m2 K at 95 °C was one magnitude larger than those of other pyroelectric polymers and was almost comparable with those of some inorganic pyroelectric materials.


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